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Temporal Trends in Post Myocardial Infarction Heart Failure and Outcomes Among Older Adults.

Kochar A, Doll JA, Liang L, Curran J, Peterson ED. Temporal Trends in Post Myocardial Infarction Heart Failure and Outcomes Among Older Adults. Journal of cardiac failure. 2021 Oct 5.

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BACKGROUND: We sought to determine national trends and long term outcomes of post myocardial infarction (MI) heart failure. An MI can be complicated by heart failure; there are limited data describing the contemporary patterns and clinical implications of post-MI heart failure. METHODS AND RESULTS: We studied patients with an MI aged 65 years or older from 2000 to 2013 in a Medicare database. New-onset heart failure after an MI was defined as either heart failure during the index MI admission or a hospitalization for heart failure within 1 year of the index MI event. A trend analysis of the incidence of heart failure was performed, and differences were examined by Gray tests. The 5-year mortality rates were evaluated and differences among heart failure cohorts were ascertained by Gray tests. There were a total of 1,531,638 patients with an MI and 565,291 patients had heart failure (36.0%). The rate of heart failure during index admission was 32.3% and the frequency of heart failure hospitalization within 1 year was 10.4%. Patients with heart failure were older (81 years vs 77 years). The temporal trend from 2001 to 2012 suggested a decrease in the incidence of heart failure during index admission (2001: 34.7%, 2012: 31.2%, P < .01), as well as heart failure hospitalization within 1 year (2001: 11.3%, 2012: 8.7%, P < .01). The 5-year mortality rate among patients without heart failure was 38.4% and for patients with any heart failure it was 68.7%. CONCLUSIONS: Post-MI heart failure in older adults occurs in 1 in 3 patients within 1 year; heart failure portends significantly higher long-term mortality.

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